AUTHOR=Liu Dongchen , Yang Xuefeng , Zhao Shengxian , Zhang Deliang , Huang Shan , Zhu Ning , Rong Jianqi , Shi Bowen , Wang Zhiwei , Qin Chao-Zhong TITLE=Three-dimensional reconstruction and connectivity analysis of REV-size organic matter in shales JOURNAL=Frontiers in Earth Science VOLUME=13 YEAR=2025 URL=https://www.frontiersin.org/journals/earth-science/articles/10.3389/feart.2025.1537217 DOI=10.3389/feart.2025.1537217 ISSN=2296-6463